Install library commands

Search version

sudo apt search libgtkmm

Result like

sudo apt install build-essential libgtkmm-3.0-dev -y

Simple Blank Window Code

#include <gtkmm.h>

int main(int argc, char *argv[]){
 Gtk::Main kit(argc, argv);

 Gtk::Window window;
 Gtk::Main::run(window);

 return 0;
}

#include <gtkmm.h>

int main(int argc, char *argv[])
{
  // default app type == Glib::RefPtr<Gtk::Application>
	//Glib::RefPtr<Gtk::Application> app =
  auto app =
    Gtk::Application::create(argc, argv,
      "copyright");

  Gtk::Window window;
  window.set_default_size(200, 200);

  return app->run(window);
}

Compile on Terminal

g++ myCpp.cpp -o myCpp `pkg-config --libs --cflags gtkmm-3.0`

Notice!! The parameter is covered by backticks instead of the single quote!

Code::Block Include

You can find header in

/usr/include/...

On Code::Block: